Merge pull request #4 from mc-lang/function_features

Function features

editor/vscode/package.json

@@ -2,7 +2,7 @@
   "name": "mclang",
   "displayName": "mclang",
   "description": "Code highlighting for mclang",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "repository": {
     "type": "git",
     "url": "git@github.com:mc-lang/mclang2.git"

editor/vscode/syntaxes/mclang.tmLanguage.json

@@ -112,7 +112,7 @@
 			]
 		},
 		"comments": {
-			"disabled__patterns": [
+			"patterns": [
 				{
 					"name": "constant.other.character-class.regexp",
 					"match": "(?://\\s*)(TODO(O*)|FIXME).*"

src/compile/linux_x86_64.rs

@@ -1,5 +1,5 @@
 use std::{fs, path::PathBuf, io::{Write, BufWriter}, collections::HashMap};
-use crate::{constants::{Operator, OpType, KeywordType}, Args};
+use crate::{constants::{Operator, OpType, KeywordType}, Args, warn, lerror};
 use color_eyre::Result;
 use crate::compile::commands::linux_x86_64_compile_and_link;
 use crate::constants::InstructionType;
@@ -25,6 +25,7 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
     of_o.set_extension("o");
     of_a.set_extension("nasm");
 
+    let mut should_push_ret = false;
 
     let file = fs::File::create(&of_a)?;
     let mut writer = BufWriter::new(&file);
@@ -71,11 +72,14 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
     writeln!(writer, "    add     rsp, 40")?;
     writeln!(writer, "    ret")?;
 
-    writeln!(writer, "global _start")?;
+    if crate::config::ENABLE_EXPORTED_FUNCTIONS && !args.lib_mode {
-    writeln!(writer, "_start:")?; 
+        writeln!(writer, "global _start")?;
-    writeln!(writer, "    lea rbp, [rel ret_stack]")?;
+        writeln!(writer, "_start:")?; 
-    writeln!(writer, "    call main")?;
+        writeln!(writer, "    lea rbp, [rel ret_stack]")?;
-    writeln!(writer, "    jmp end")?;
+        writeln!(writer, "    call main")?;
+        writeln!(writer, "    jmp end")?;
+
+    }
 
 
     let mut ti = 0;
@@ -92,10 +96,11 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                 writeln!(writer, "    ;; -- {:?}", token.typ)?;
             }
         } else {
-
+            if ti > 0 {
-            if ti != 0 && tokens[ti-1].typ == OpType::Keyword(KeywordType::Else) ||
+                if tokens[ti-1].typ == OpType::Keyword(KeywordType::Else) ||
                 tokens[ti-1].typ == OpType::Keyword(KeywordType::End){
-                writeln!(writer, "addr_{ti}:")?;
+                    writeln!(writer, "addr_{ti}:")?;
+                }
             }
 
             if ti + 1 < tokens.len() && tokens[ti+1].typ == OpType::Keyword(KeywordType::End) {
@@ -415,6 +420,12 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                         ti += 1;
                     },
                     InstructionType::Return => {
+
+                        if crate::config::ENABLE_EXPORTED_FUNCTIONS && should_push_ret {
+                            writeln!(writer, "    pop rdx")?;
+                            should_push_ret = false;
+                        }
+
                         writeln!(writer, "    sub rbp, 8")?;
                         writeln!(writer, "    mov rbx, qword [rbp]")?;
                         writeln!(writer, "    push rbx")?;
@@ -429,7 +440,6 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                     InstructionType::TypePtr |
                     InstructionType::TypeInt |
                     InstructionType::TypeVoid |
-                    InstructionType::TypeStr |
                     InstructionType::TypeAny |
                     InstructionType::Returns |
                     InstructionType::With => {
@@ -496,10 +506,16 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                         writeln!(writer, "    pop rbx")?;
                         writeln!(writer, "    mov qword [rbp], rbx")?;
                         writeln!(writer, "    add rbp, 8")?;
-                        functions.push(Function { loc: token.loc.clone(), name: token.text.clone() });
+                        functions.push(Function { loc: token.loc.clone(), name: token.text.clone(), exter: false});
                         ti += 1;
                     },
                     KeywordType::FunctionDone => {
+                        
+                        if crate::config::ENABLE_EXPORTED_FUNCTIONS && should_push_ret {
+                            writeln!(writer, "    pop rdx")?;
+                            should_push_ret = false;
+                        }
+
                         writeln!(writer, "    sub rbp, 8")?;
                         writeln!(writer, "    mov rbx, qword [rbp]")?;
                         writeln!(writer, "    push rbx")?;
@@ -509,16 +525,71 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                     KeywordType::FunctionThen => ti += 1,
                     KeywordType::Function |
                     KeywordType::Include |
+                    KeywordType::Inline |
+                    KeywordType::Export |
                     KeywordType::Constant => unreachable!(),
+                    KeywordType::FunctionDefExported => {
+
+                        if !crate::config::ENABLE_EXPORTED_FUNCTIONS {
+                            lerror!(&token.loc, "Experimental feature 'exported functions' is not enabled");
+                            return Err(eyre!(""));
+                        }
+
+                        writeln!(writer, "global {}", token.text)?;
+                        writeln!(writer, "{}:", token.text)?;
+                        
+                        writeln!(writer, "    pop rbx")?;
+                        writeln!(writer, "    mov qword [rbp], rbx")?;
+                        writeln!(writer, "    add rbp, 8")?;
+                        warn!("External functions are highly experimental and should be treated as such");
+                        if token.types.0 == 0 {
+                            writeln!(writer, "    ; no arguments")?;
+                        } else {
+                            if token.types.0 >= 1 {
+                                writeln!(writer, "    push rdi")?;
+                            }
+                            if token.types.0 >= 2 {
+                                writeln!(writer, "    push rsi")?;
+                            } 
+                            if token.types.0 >= 3 {
+                                writeln!(writer, "    push rdx")?;
+                            } 
+                            if token.types.0 >= 4 {
+                                writeln!(writer, "    push rcx")?;
+                            }
+                            if token.types.0 >= 5 {
+                                writeln!(writer, "    push r8")?;
+                            }
+                            if token.types.0 >= 6 {
+                                writeln!(writer, "    push r9")?;
+                            }
+                            if token.types.0 >= 7 {
+                                lerror!(&token.loc, "More than 6 arguments in an external function is not supported");
+                                return Err(eyre!(""));
+                            } 
+                        }
+
+                        if token.types.1 == 1 {
+                            should_push_ret = true;
+                        } else if token.types.1 > 1 {
+                            lerror!(&token.loc, "More than 1 return arguments in an external function is not supported");
+                            return Err(eyre!(""));
+                        } 
+                            
+                        functions.push(Function { loc: token.loc.clone(), name: token.text.clone(), exter: false});
+                        ti += 1;
+                    },
                 }
             }
         }
     }
     writeln!(writer, "addr_{ti}:")?;
-    writeln!(writer, "end:")?;
+    if crate::config::ENABLE_EXPORTED_FUNCTIONS && !args.lib_mode {
-    writeln!(writer, "    mov rax, 60")?;
+        writeln!(writer, "end:")?;
-    writeln!(writer, "    mov rdi, 0")?;
+        writeln!(writer, "    mov rax, 60")?;
-    writeln!(writer, "    syscall")?;
+        writeln!(writer, "    mov rdi, 0")?;
+        writeln!(writer, "    syscall")?;
+    }
     writeln!(writer, "segment .data")?;
     for (i, s) in strings.iter().enumerate() {
         let s_chars = s.chars().map(|c| (c as u32).to_string()).collect::<Vec<String>>();

src/compile/mod.rs

@@ -23,5 +23,6 @@ pub struct Memory {
 #[derive(Debug, Clone)]
 pub struct Function {
     pub loc: Loc,
-    pub name: String
+    pub name: String,
+    pub exter: bool,
 }

src/config.rs

@@ -1,7 +1,7 @@
 /**
  * Prints out extra information
  */
-pub const DEV_MODE: bool = true;
+pub const DEV_MODE: bool = false;
 
 pub const DEFAULT_OUT_FILE: &str = "a.out";
 pub const DEFAULT_INCLUDES: [&str;1] = [
@@ -17,4 +17,10 @@ pub const DEFAULT_INCLUDES: [&str;1] = [
  * if you have buffer overflow consider increasing these
  */
 pub const MEM_SZ: usize = 640 * 1000; // 4kb
-pub const STRING_SZ: usize = 640 * 1000; // 4kb
+pub const STRING_SZ: usize = 640 * 1000; // 4kb
+
+
+/**
+ * Experimental options
+ */
+pub const ENABLE_EXPORTED_FUNCTIONS: bool = false;

src/constants.rs

@@ -58,7 +58,7 @@ pub enum InstructionType {
     TypePtr,
     TypeInt,
     TypeVoid,
-    TypeStr,
+    // TypeStr,
     TypeAny,
     Returns,
     With,
@@ -84,8 +84,11 @@ pub enum KeywordType {
     ConstantDef,
     Function,
     FunctionDef,
+    FunctionDefExported,
     FunctionThen,
-    FunctionDone
+    FunctionDone,
+    Inline,
+    Export
 }
 
 #[derive(Debug, Clone, PartialEq)]
@@ -102,7 +105,8 @@ pub struct Operator{
     pub text: String, //? only used for OpType::PushStr
     pub addr: Option<usize>, //? only used for OpType::PushStr
     pub jmp: usize,
-    pub loc: Loc
+    pub loc: Loc,
+    pub types: (usize, usize)
 }
 
 impl Operator {
@@ -115,13 +119,19 @@ impl Operator {
             text,
             loc: (file, row, col),
             tok_typ,
+            types: (0, 0)
         }
     }
-    pub fn set_addr(mut self, addr: usize) -> Self {
+    pub fn set_addr(&mut self, addr: usize) -> Self {
         self.addr = Some(addr);
-        self
+        (*self).clone()
     }
 
+    // pub fn set_types(&mut self, args: usize, rets: usize) -> Self {
+    //     self.types = (args, rets);
+    //     (*self).clone()
+    // }
+
 }
 
 impl OpType {
@@ -178,7 +188,6 @@ impl OpType {
                     InstructionType::TypePtr => "ptr",
                     InstructionType::TypeInt => "int",
                     InstructionType::TypeVoid => "void",
-                    InstructionType::TypeStr => "str",
                     InstructionType::Returns => "returns",
                     InstructionType::With => "with",
                     InstructionType::TypeAny => "any",
@@ -198,7 +207,10 @@ impl OpType {
                     KeywordType::FunctionThen => "then",
                     KeywordType::FunctionDone => "done",
                     KeywordType::ConstantDef => "constant Definition (internal)",
-                    KeywordType::FunctionDef => "function definition (internal)"
+                    KeywordType::FunctionDef => "function definition (internal)",
+                    KeywordType::FunctionDefExported => "extern function definition (internal)",
+                    KeywordType::Inline => "inline",
+                    KeywordType::Export => "export",
                 }
             }
             
@@ -255,7 +267,6 @@ pub enum Types {
     Ptr,
     Int,
     Void,
-    Str,
     Any
     // U8,
     // U16,

src/interpret/linux_x86_64/mod.rs

@@ -328,7 +328,6 @@ pub fn run(ops: &[crate::constants::Operator]) -> Result<i32>{
                     InstructionType::TypePtr |
                     InstructionType::TypeInt |
                     InstructionType::TypeVoid |
-                    InstructionType::TypeStr |
                     InstructionType::TypeAny |
                     InstructionType::Returns |
                     InstructionType::With => ip += 1,
@@ -362,6 +361,7 @@ pub fn run(ops: &[crate::constants::Operator]) -> Result<i32>{
                     KeywordType::While | //* exept this one, this one should just skip over
                     KeywordType::Memory |
                     KeywordType::FunctionDef |
+                    KeywordType::FunctionDefExported |
                     KeywordType::ConstantDef => {
                         //? Disabled since we now pre run the whole program
                         // constants.insert(op.text.clone(), Constant { loc: op.loc.clone(), name: op.text.clone(), value_i: Some(op.value), value_s: None, used: false });
@@ -378,6 +378,8 @@ pub fn run(ops: &[crate::constants::Operator]) -> Result<i32>{
                     KeywordType::FunctionThen  => ip += 1,
                     KeywordType::Constant |
                     KeywordType::Function |
+                    KeywordType::Inline |
+                    KeywordType::Export |
                     KeywordType::Include => unreachable!(),
                 }
             }
@@ -407,6 +409,9 @@ pub fn pre_run(ops: &[Operator]) -> Defineds {
             OpType::Keyword(KeywordType::Memory) => {
                 defineds.memories.insert(op.addr.unwrap(), Memory { size: op.value, loc: op.loc.clone(), id: op.addr.unwrap() });
             },
+            OpType::Keyword(KeywordType::FunctionDefExported) => {
+
+            }
             OpType::Keyword(KeywordType::FunctionDef) => {
                 defineds.functions.insert(op.text.clone(), Function { loc: op.loc.clone(), name: op.text.clone(), id: ip });
             },

src/main.rs

@@ -57,6 +57,9 @@ pub struct Args {
     #[arg(long, short='O', default_value_t=String::from("0"))]
     optimisation: String,
 
+    // disables the main function
+    #[arg(long="lib")]
+    lib_mode: bool
     //#[arg(long, short='F')]
     //features: Vec<String>,
 

src/parser.rs

@@ -44,9 +44,7 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
                         program[ip].jmp = program[block_ip].jmp;
                         program[block_ip].jmp = ip + 1;
                     }
-                    OpType::Keyword(KeywordType::FunctionThen) => {
+                    
-                        program[ip].typ = OpType::Instruction(InstructionType::Return);
-                    }
                     OpType::Keyword(KeywordType::Memory | KeywordType::Constant) => (),
 
                     a => {
@@ -208,6 +206,8 @@ pub fn lookup_word<P: Deref<Target = Loc>>(s: &str, _pos: P) -> OpType {
         "fn" => OpType::Keyword(KeywordType::Function),
         "then" => OpType::Keyword(KeywordType::FunctionThen),
         "done" => OpType::Keyword(KeywordType::FunctionDone),
+        "inline" => OpType::Keyword(KeywordType::Inline),
+        "export" => OpType::Keyword(KeywordType::Export),
         "return" => OpType::Instruction(InstructionType::Return),
         "returns" => OpType::Instruction(InstructionType::Returns),
         "bool" => OpType::Instruction(InstructionType::TypeBool),
@@ -215,7 +215,6 @@ pub fn lookup_word<P: Deref<Target = Loc>>(s: &str, _pos: P) -> OpType {
         "ptr" => OpType::Instruction(InstructionType::TypePtr),
         "void" => OpType::Instruction(InstructionType::TypeVoid),
         "any" => OpType::Instruction(InstructionType::TypeAny),
-        "str" => OpType::Instruction(InstructionType::TypeStr),
         "with" => OpType::Instruction(InstructionType::With),
         _ => OpType::Instruction(InstructionType::None)
     }

src/preprocessor.rs

@@ -17,7 +17,9 @@ use crate::parser::lookup_word;
 #[derive(Debug, Clone)]
 pub struct Function {
     pub loc: Loc,
-    pub name: String
+    pub name: String,
+    pub inline: bool,
+    pub tokens: Option<Vec<Operator>>
 }
 
 #[derive(Debug, Clone)]
@@ -62,20 +64,21 @@ impl<'a> Preprocessor<'a> {
     pub fn preprocess(&mut self) -> Result<&mut Preprocessor<'a>>{
         // println!("pre: has do tokens: {:?}", self.program.iter().map(|t| if t.typ == OpType::Keyword(KeywordType::Do) {Some(t)} else {None} ).collect::<Vec<Option<&Operator>>>());
         
+        let mut f_inline = false;
+        let mut f_extern = false;
+
         let mut program: Vec<Operator> = Vec::new();
 
         let mut rtokens = self.program.clone();
         rtokens.reverse();
         while !rtokens.is_empty() {
-            let mut token = rtokens.pop().unwrap();
+            let mut op = rtokens.pop().unwrap();
             // println!("{token:?}");
-            let op_type = token.typ.clone();
+            let op_type = op.typ.clone();
-            match token.clone() {
+            match op_type {
-                
+                OpType::Keyword(KeywordType::Include) => {
-
-                _ if op_type == OpType::Keyword(KeywordType::Include) => {
                     if rtokens.is_empty() {
-                        lerror!(&token.loc, "Include path not found, expected {} but found nothing", TokenType::String.human());
+                        lerror!(&op.loc, "Include path not found, expected {} but found nothing", TokenType::String.human());
                         return Err(eyre!(""));
                     }
 
@@ -127,9 +130,10 @@ impl<'a> Preprocessor<'a> {
 
 
                 }
-                _ if op_type == OpType::Keyword(KeywordType::Memory) => {
+
+                OpType::Keyword(KeywordType::Memory) => {
                     if rtokens.is_empty() {
-                        lerror!(&token.loc, "Memory name not found, expected {} but found nothing", TokenType::String.human());
+                        lerror!(&op.loc, "Memory name not found, expected {} but found nothing", TokenType::String.human());
                         return Err(eyre!(""));
                     }
 
@@ -159,19 +163,20 @@ impl<'a> Preprocessor<'a> {
 
 
                     if res.len() != 1 {
-                        lerror!(&token.loc, "Expected 1 number, got {:?}", res);
+                        lerror!(&op.loc, "Expected 1 number, got {:?}", res);
                         return Err(eyre!(""));
                     }
-                    token.value = res[0];
+                    op.value = res[0];
-                    token.addr = Some(self.memories.len());
+                    op.addr = Some(self.memories.len());
-                    program.push(token.clone());
+                    program.push(op.clone());
 
-                    self.memories.insert(name.text, Memory { loc: token.loc, id: self.memories.len() });
+                    self.memories.insert(name.text, Memory { loc: op.loc, id: self.memories.len() });
 
                 }
-                _ if op_type == OpType::Keyword(KeywordType::Function) => {
+
+                OpType::Keyword(KeywordType::Function) => {
                     if rtokens.is_empty() {
-                        lerror!(&token.loc, "Function name not found, expected {} but found nothing", TokenType::Word.human());
+                        lerror!(&op.loc, "Function name not found, expected {} but found nothing", TokenType::Word.human());
                         return Err(eyre!(""));
                     }
 
@@ -206,20 +211,130 @@ impl<'a> Preprocessor<'a> {
                     self.is_word_available(&name, KeywordType::Function)?;
                     
                     
-                    self.functions.insert(name.text.clone(), Function{
+                    if f_inline {
-                        loc: name.loc.clone(),
+                        f_inline = false;
-                        name: name.text.clone(),
+                        let mut prog: Vec<Operator> = Vec::new();
-                    });
+                        let mut depth = -1;
+                        while !rtokens.is_empty() {
+                            let op = rtokens.pop().unwrap();
 
-                    let mut fn_def = token.clone();
+                            match op.typ.clone() {
-                    fn_def.typ = OpType::Keyword(KeywordType::FunctionDef);
+                                OpType::Instruction(i) => {
-                    fn_def.text = name.text;
+                                    match i {
-                    // println!("{:?}", token);
+                                        InstructionType::TypeAny |
-                    program.push(fn_def);
+                                        InstructionType::TypeBool |
+                                        InstructionType::TypeInt |
+                                        InstructionType::TypePtr |
+                                        InstructionType::With |
+                                        InstructionType::Returns |
+                                        InstructionType::TypeVoid => {
+                                            if depth >= 0 {
+                                                prog.push(op);
+                                            }
+                                        },
+                                        _ => prog.push(op)
+                                    }
+                                }
+                                OpType::Keyword(k) => {
+                                    match k {
+                                        KeywordType::Inline |
+                                        KeywordType::Include => {
+                                            todo!("make error")
+                                        },
+                                        KeywordType::FunctionThen => {
+                                            if depth >= 0 {
+                                                prog.push(op);
+                                            }
+                                            depth += 1;
+                                        },
+                                        KeywordType::FunctionDone => {
+                                            if depth == 0 {
+                                                break;
+                                            }
+
+                                            depth -= 1;
+                                        },
+                                        _ => prog.push(op)
+                                    }
+                                }
+                            }
+                        }
+                        let mut pre = self.clone();
+                        pre.program = prog;
+                        pre.preprocess()?;
+                        prog = pre.get_ops();
+
+                        self.functions.insert(name.text.clone(), Function{
+                            loc: name.loc.clone(),
+                            name: name.text.clone(),
+                            inline: true,
+                            tokens: Some(prog)
+                        });
+                        
+                    } else if f_extern {
+                        f_extern = false;
+                        self.functions.insert(name.text.clone(), Function{
+                            loc: name.loc.clone(),
+                            name: name.text.clone(),
+                            inline: false,
+                            tokens: None
+                        });
+                        let mut a: Vec<Operator> = Vec::new();
+                        let mut fn_def = op.clone();
+                        a.push(rtokens.pop().unwrap());
+                        let mut ret = false;
+                        while !rtokens.is_empty() {
+                            let op = rtokens.pop().unwrap();
+                            // println!("{:?}",op);
+                            a.push(op.clone());
+                            if op.typ == OpType::Instruction(InstructionType::Returns) {
+                                ret = true;
+                            }
+
+                            if op.typ == OpType::Keyword(KeywordType::FunctionThen) {
+                                break;
+                            }
+
+                            if op.typ == OpType::Instruction(InstructionType::TypeBool) ||
+                                op.typ == OpType::Instruction(InstructionType::TypeInt) ||
+                                op.typ == OpType::Instruction(InstructionType::TypePtr) {
+
+                                if ret {
+                                    fn_def.types.1 += 1;
+                                } else {
+                                    fn_def.types.0 += 1;
+                                }
+                            }
+                        }
+
+                        fn_def.typ = OpType::Keyword(KeywordType::FunctionDefExported);
+                        fn_def.text = name.text;
+                        // fn_def.set_types(args, rets);
+                        // println!("{:?}", fn_def.types);
+                        program.push(fn_def);
+                        program.append(&mut a);
+
+
+                    } else {
+
+                        self.functions.insert(name.text.clone(), Function{
+                            loc: name.loc.clone(),
+                            name: name.text.clone(),
+                            inline: false,
+                            tokens: None
+                        });
+                        
+                        let mut fn_def = op.clone();
+                        fn_def.typ = OpType::Keyword(KeywordType::FunctionDef);
+                        fn_def.text = name.text;
+                        // println!("{:?}", token);
+                        program.push(fn_def);
+                    }
                 }
-                _ if op_type == OpType::Keyword(KeywordType::Constant) => {
+                
+                OpType::Keyword(KeywordType::Constant) => {
                     if rtokens.is_empty() {
-                        lerror!(&token.loc, "Constant name not found, expected {} but found nothing", TokenType::Word.human());
+                        lerror!(&op.loc, "Constant name not found, expected {} but found nothing", TokenType::Word.human());
                         return Err(eyre!(""));
                     }
                     // println!("{token:?}");
@@ -263,7 +378,7 @@ impl<'a> Preprocessor<'a> {
 
                     // println!("{:?}", self.constants);
 
-                    let mut const_def = token.clone();
+                    let mut const_def = op.clone();
                     const_def.typ = OpType::Keyword(KeywordType::ConstantDef);
                     const_def.text = name.text;
 
@@ -271,14 +386,14 @@ impl<'a> Preprocessor<'a> {
                     if item.tok_typ == TokenType::Int {
                         const_def.value = item.value;
                     } else {
-                        lerror!(&token.loc, "For now only {:?} is allowed in constants", TokenType::Int);
+                        lerror!(&op.loc, "For now only {:?} is allowed in constants", TokenType::Int);
                         return Err(eyre!(""));
                     }
 
                     let posibly_end = rtokens.pop();
                     // println!("end: {posibly_end:?}");
                     if posibly_end.is_none() || posibly_end.unwrap().typ != OpType::Keyword(KeywordType::End) {
-                        lerror!(&token.loc, "Constant was not closed with an 'end' instruction, expected 'end' but found nothing");
+                        lerror!(&op.loc, "Constant was not closed with an 'end' instruction, expected 'end' but found nothing");
                         return Err(eyre!(""));
                     }
                     // token.value = 
@@ -286,9 +401,32 @@ impl<'a> Preprocessor<'a> {
                     program.push(const_def);
                 }  
 
+                OpType::Keyword(KeywordType::Inline) => {
+                    if f_extern {
+                        lerror!(&op.loc, "Function is already marked as extern, function cannot be inline and extern at the same time");
+                        return Err(eyre!(""));
+                    } else if f_inline {
+                        lerror!(&op.loc, "Function is already marked as inline, remove this inline Keyword");
+                        return Err(eyre!(""));
+                    } else {
+                        f_inline = true;
+                    }
+                }
+
+                OpType::Keyword(KeywordType::Export) => {
+                    if f_inline {
+                        lerror!(&op.loc, "Function is already marked as inline, function cannot be inline and extern at the same time");
+                        return Err(eyre!(""));
+                    } else if f_extern {
+                        lerror!(&op.loc, "Function is already marked as extern, remove this extern Keyword");
+                        return Err(eyre!(""));
+                    } else {
+                        f_extern = true;
+                    }
+                }
+
                 _ => {
-                    
+                    program.push(op);
-                    program.push(token);
                 }
             }
         }
@@ -303,6 +441,7 @@ impl<'a> Preprocessor<'a> {
                 f.typ != OpType::Instruction(InstructionType::FnCall) && 
                 f.typ != OpType::Instruction(InstructionType::MemUse) &&
                 f.typ != OpType::Keyword(KeywordType::FunctionDef) &&
+                f.typ != OpType::Keyword(KeywordType::FunctionDefExported) &&
                 f.typ != OpType::Keyword(KeywordType::ConstantDef) &&
                 f.typ != OpType::Instruction(InstructionType::ConstUse) {
                 lookup_word(&f.text, &f.loc)
@@ -334,15 +473,18 @@ impl<'a> Preprocessor<'a> {
             if op.tok_typ == TokenType::Word {
                 match op_type {
                     OpType::Instruction(InstructionType::None) => {
-                        let m = self.functions.get(&op.text);
+                        let m = self.functions.get(&op.text.clone().replace('(', "__OP_PAREN__").replace(')', "__CL_PAREN__"));
                         let mem = self.memories.get(&op.text);
-                        let cons = self.constants.get(&op.text);
+                        let cons = self.constants.get(&op.text.clone().replace('(', "__OP_PAREN__").replace(')', "__CL_PAREN__"));
                         if let Some(m) = m {
-                            // println!("------ FOUND FUNCTION {} -----------", m.name);
+                            if m.inline {
-                            let mut t = op.clone();
+                                program.append(&mut m.tokens.clone().unwrap());
-                            t.typ = OpType::Instruction(InstructionType::FnCall);
+                            } else {                                
-                            t.text = m.name.clone();
+                                let mut t = op.clone();
-                            program.push(t.clone());
+                                t.typ = OpType::Instruction(InstructionType::FnCall);
+                                t.text = m.name.clone();
+                                program.push(t.clone());
+                            }
 
                             // println!("##### {:?}", t);
                         } else if let Some(mem) = mem {

src/typechecker.rs

@@ -62,9 +62,10 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args, init_types: Option<Vec<Types>>
                         stack_pop(&mut stack, &op, &[Types::Bool])?;
                     },
 
+                    KeywordType::FunctionDefExported |
                     KeywordType::FunctionDef => {
                         let name = op.text.clone();
-
+                        // println!("{:?}", name);
                         if let Some(p) = rtokens.pop() {
                             if p.typ != OpType::Instruction(InstructionType::With){
                                 lerror!(&op.loc, "Expected {:?}, got {:?}", OpType::Instruction(InstructionType::With), p.typ);
@@ -105,8 +106,6 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args, init_types: Option<Vec<Types>>
                                             continue;
                                         }
                                         Types::Void
-                                    } else if op.typ == OpType::Instruction(InstructionType::TypeStr) {
-                                        Types::Str
                                     } else if op.typ == OpType::Instruction(InstructionType::TypeAny) {
                                         Types::Any
                                     } else {
@@ -176,7 +175,12 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args, init_types: Option<Vec<Types>>
                     },
                     KeywordType::FunctionThen |
                     KeywordType::FunctionDone |
-                    KeywordType::Function => unreachable!(),
+                    KeywordType::Inline |
+                    KeywordType::Export |
+                    KeywordType::Function => {
+                        println!("{:?}", op);
+                        unreachable!()
+                    },
                 }
             },
             OpType::Instruction(instruction) => {
@@ -330,7 +334,10 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args, init_types: Option<Vec<Types>>
                     InstructionType::FnCall  => {
                         stack_snapshots.push(stack.clone());
                         
-                        let f = functions.get(&op.text).unwrap().clone();
+                        let f = if let Some(f) = functions.get(&op.text) {f} else {
+                            lerror!(&op.loc, "Could not find function {}", op.text);
+                            return Err(eyre!(""));
+                        };
 
                         // in_function = (op.text.clone(), f.clone(), op.loc.clone());
 
@@ -360,7 +367,6 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args, init_types: Option<Vec<Types>>
                     InstructionType::TypeInt |
                     InstructionType::TypeVoid |
                     InstructionType::TypeAny |
-                    InstructionType::TypeStr |
                     InstructionType::Returns |
                     InstructionType::With => (),
                     InstructionType::ConstUse => {

test.mcl

@@ -1,5 +1,12 @@
-include "std.mcl"
+// include "std.mcl"
+fn mcl_print with int ptr returns void then
+    1 1 syscall3 drop
+done
+
+fn mcl_dump with int returns void then
+    _dbg_print
+done
 
 fn main with void returns void then
-    "hi\n" puts
+    "hi\n" mcl_print
-done
+done